Aerco AM 500W Anwendungshandbuch - Seite 8

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Aerco AM 500W Anwendungshandbuch
GF-146-V
TAG-0075_0B
o If horizontal ducts are used, each opening and duct shall have a minimum free area of 1
square inch per 2,000 BTU per hour of total input rating of all appliances in the room.
Figure 2: Combustion-Air Makeup-Air Vent Location
•
When calculating free area using louvers and grilles, the required size of the openings for
combustion, ventilation, and dilution air shall be based on the total free area of each opening.
•
If the free area through a designed louver or grille is known, it shall be used in calculating the
size of the opening required to provide the free area specified.
•
If the louver and grille design free areas are not known, the following will be assumed for
wooden louvers a 25 percent free area, and for metal louvers and grilles a 75 percent free
area opening.
•
When terminating the combustion air through the roof:
o Combustion air inlet must be 3 ft. below any vent outlet within 10 ft. See Figure 3.
o Combustion air inlet must also face away from the vent outlet. See Figure 3.
Page 8 of 20
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
AM Series Venting
Application Guide
AM1 04/08/2014